Article type: Research Article
Authors: Yousefi, Samaneha | Eshghi, Saeida; * | Jamali, Babakb; *
Affiliations:
[a]
Department of Horticultural Science, School of Agriculture, Shiraz University, Shiraz, Iran
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[b]
Department of Agriculture, Minab Higher Education Center, University of Hormozgan, Bandar Abbas, Iran
Correspondence:
[*]
Corresponding author: Saeid Eshghi, Department of Horticultural Science, School of Agriculture, Shiraz University, Shiraz, Iran. Tel.: +98 9173165306, Fax: +98 7132276907; E-mail: [email protected] and Babak Jamali, Department of Agriculture, Minab Higher Education Center, University of Hormozgan, Bandar Abbas, Iran. Tel.: +98 917313471; Fax: +98 7642284665; E-mail: [email protected].
Abstract: BACKGROUND:The normal growth and yield of strawberry plant are affected by lack of balanced fertilization. OBJECTIVE:This study was carried out to evaluate the effects of different N/K ratios of nutrient solution on yield, some biochemical characteristics, macro-, and micronutrient concentrations, absorption, and translocation factor in strawberry ‘Camarosa’. METHODS:Three concentration levels of K (200, 250, and 300 mg l–1, using KNO3, KCl, and K2SO4) and two concentration levels of N (120 and 180 mg l–1, using NH4H2PO4, Ca(NO3)2, and KNO3) were applied during two vegetative and reproductive growth stages. RESULTS:The results showed that the highest productivity (149.05 g/plant), soluble sugars, and starch content were obtained from plants which had received a K/N ratio of 200/180 and 300/120 mg l–1 during the vegetative and reproductive stages, respectively. Plants treated with the highest K and N concentrations (300 and 180 mg l–1, respectively) during the vegetative and reproductive stages had the highest leaf area, photochemical efficiency of photosystem II (Fv/Fm), as well as shoot and root dry weight. High N and low K concentration in the nutrient solution increased concentrations of N, Ca, Mg, Mn, and Zn while decreased K and Fe concentrations. In addition, higher N levels increased the uptake of N, P, K, Ca, Mg, Mn, and Zn. At a K/N ratio of 200/120 mg l–1, the translocation factor of N decreased, while the translocation factor of K and Mg increased. CONCLUSION:In conclusion, the changes in the K/N ratio significantly affected the concentration of nutrient elements, absorption and translocation factor.
Keywords: Fragaria ananassa, potassium, nitrogen, nutrients balance, productivity
DOI: 10.3233/JBR-220056
Journal: Journal of Berry Research, vol. 13, no. 2, pp. 95-106, 2023
Received 23 August 2022
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Accepted 28 February 2023
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Published: 07 June 2023